Scandinavian Working Papers in Economics
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Department of Economics, Lund University Working Papers, Department of Economics, Lund University

No 2012:31:
Truth-Seeking Judgment Aggregation over Interconnected Issues

Irem Bozbay ()

Abstract: This paper analyses the problem of aggregating judgments over multiple interconnected issues. We enrich the model by introducing the private information underlying individuals’ judgments. Individuals share a common preference for reaching true collective judgments, but hold private information about what the truth might be. Information conflicts may occur both between and within individuals. Assuming strategic voting in a Bayesian voting game setting, we determine the voting rules which lead to collective judgments that efficiently incorporate all private information. We characterize the (rare) situations in which such rules exist, as well as the nature of these rules.

Keywords: judgment aggregation; private information; efficient information aggregation; strategic voting; (follow links to similar papers)

JEL-Codes: D70; D71; (follow links to similar papers)

19 pages, November 14, 2012

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